avcodec/hevc: Add YUV420P10 to vaapi hardware decode - permits hardware decoding of HEVC Main 10 on AMD RX 480

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/hevc.c

@@ -369,6 +369,9 @@ static int set_sps(HEVCContext *s, const HEVCSPS *sps, enum AVPixelFormat pix_fm
 #endif
 #if CONFIG_HEVC_D3D11VA_HWACCEL
         *fmt++ = AV_PIX_FMT_D3D11VA_VLD;
+#endif
+#if CONFIG_HEVC_VAAPI_HWACCEL
+        *fmt++ = AV_PIX_FMT_VAAPI;
 #endif
         break;
     }